How To Automate API Testing With Postman
In real life, we access many applications. Did you ever notice how your request or action was initiated and visualize the response within a few clicks?
Well, it’s all because of API protocol; you can interact with any application functionalities. API platforms manage all the backstage drama and present a clear view and layout.
Numerous API platforms provide the facility to launch direct communication between applications. By the time things have evolved, it has achieved the modernization standard format and visuals. You can adopt any API protocol architecture and drive the functionality for successful application operation.
Like other things, API testing is also essential to investigate the internal logic, performance, pace, security, data, etc. You can search for the automated API testing tool and validate the API protocol functionality for final integration.
In this blog, we are covering the process of Automate API testing with the Postman tool. More than 7 million developers and QA have supported its functionality. It offers the debug, automation testing, design, documentation, monitoring, mocking, etc.
API Documentation to CI/CD pipeline, automate testing with Postman
Regular testing/ inspection roundups reduce the chances of application crashes. If the API throws unexceptional behavior, it will diminish the user experience and impact credibility. You should only process the application after getting the successful testing status.
Begin with the API Documentation
We should prepare documentation to conclude all the basic requirements to manage the successful API testing cycle. How will this API be implemented and function?
API Review
Go through the API documentation > Access API Specification > Access Postman Collection.
Test Suite Build & Run
- Define the test cases for individual tests of an application.
- Confirm it with the Postman Collection Runner.
- Head to Newman to perform the test suite.
- Pass the value to all tests and construct the test suites.
- Access JUnit to export reports.
- Access the variables and perform the test across all the environments.
Collaborate to add team support.
Involve the teammates in analyzing and running responses and generating reports. Access in-built version control to resolve the bugs.
DevOps Integration
In this phase, we will export the test suite.
Source code repository setup & integration enabled.
Launch build environment.
Here we need to access the Postman API Workspace.
Schema Validation
A schema contains all the validated information about your API protocol types that helps throughout the development process.
- Desirable API protocol Specification formation
Postman gives you access to various schema formats for your preferences. Define the API protocol Specification as RAML, WADL, GraphQL, OpenAPI, etc. With you can do most of it. Generating the collection is one of the accessibility you get with the broad schema.
- Schema Customization/ Adaptation
We need to keep every slight change in details at a centralized location to review things later. You can manage the schema modification/ versioning task without jumping over any tool.
- Develop a reliable source of truth or single reference point (SRP).
Develop a single reference point state to access the required information anytime. It will be worth it for the entire API life cycle to accomplish the task as an individual or team player.
Define Test Suite
You can invite the team for the custom test case formation, multiple instances for multiple preferences, and running & debugging activities.
- Custom test suite for requests
Manage the efficient testing with Postman’s PM API. Declare the clean and assertive JS formatted test case satisfying each request integrated with a set of rules for better coding.
- Enable Parameterization
Practice with different parameters for different test cases following parameterization. Postman tools allow variable replacement for different requests and different instances. It fetches the data and values from the file or environment.
- Real-Time Collection Testing Overview & Debugging
Postman App integrated a collection runner here that can withdraw the real-time testing outcome. Further, you can go ahead with the Newman test results terminal. Check the debug opportunities from Postman’s console log, also. You will get a clear insight into organic requests/ responses and error log status through scripts, certificates, etc.
Compatibility Inspection by merging CI/CD pipeline
Want a reality check of API compatibility? Then it is essential to merge the CI/ CD pipeline specifications for the best testing status.
- Launch the CI/ CD Pipeline through existing test suits for every request. Postman instances allow seamless integration with the server for easy build, test, and deployment phases.
- Postman offers top-notch level scalability, bug-proof test coverage & efficiency to launch automated tests.
- Modest organization of all the test cases to manage the workflow of the testing applications. Additionally, it enables easy monitoring through the Postman or Newman.
A Brief Explanation of the Postman API Protocol Testing Process
To proceed with the Automate Testing with Postman, here is the roadmap you can follow.
- Head to the Postman Workspace.
- Place API in entering the requested URL.
- Confirm the Method from the options: POST, GET, PUT, PATCH, etc.
- Hit the request to proceed further.
You can see the response for the API protocol from the status code 200–224. After that authentication code will release.
You can access many things from the dashboard collection, API, Environments, Mock Servers, Monitors, History, Sample Book API, etc.
Know More about Postman Tool Accessibility
Collections
You can organize the different projects and their APIs and assign a name for the collection. It gives you the ease of testing at a single time. These are environment-independent.
Built-in Snippets
Postman listed the variety of built-in snippets that release the pre-define format of test codes. It could test different scenarios and functionality. Get the response: send a request, response body: contains a string, clear a connection variable, or anything else.
Access the test result section to view the response for the test snippets.
API Authentication
You can customize the API authentication, type, and value for the private endpoints.
Run Test
You can group all the tests in a collection and run them in one go.
At this step, we want to say Bid Adieu here!
This blog covers pre and post-preparation practices to perform Automate API protocol types Testing. After handling a few projects, you will realize the efficiency and significance of these tools upvoted by the QA and testers.
